查询词典 insecticide

Imino-1, 3-thiazetidines is the basic structure of a kind ofbioactive herbicide and insecticide. Our method has advantage in synthesis highly substituted2-imino-1, 3-thiazetidines, therefore it has practical value to some extent. We also researched the reactions catalyze by active zinc dust.

提供了成四员噻吖丁啶杂环衍生物的方法。2-亚胺基-1，3-噻吖丁啶是一类具有生物活性的除草剂及杀虫剂的核心结构，我们的方法在合成多取代的2-亚胺基-1，3-噻吖丁啶方面有一定的优越性，从而具有一定的实用价值本文另一部分的工作是探讨锌粉催化的反应。

Acenaphthene: Intermediate for naphthalic acids, naphthalic anhydride and for acenaphthylene; Intermediate for dyes, soaps, pigments, pharmaceuticals, insecticide, fungicide, herbicide and plant growth hormones.

苊： 萘酸/萘酐/亚苊的中间体，染料/肥皂/颜料/药品/杀虫剂/：//，/////杀真菌剂/除草剂和植物生长激素的中间体。

Objective］ The experiment aimed to explore the relation between structure of aconitine,aconitine derivatives and insecticide.

［目的］探讨中乌头碱及其衍生物的结构和杀虫活性的关系。

Home made spray system for insecticide experiment ; Anastatus japonicus Ashmead

仿真；农药喷雾实验系统；荔枝蝽卵平腹小蜂

Most important, proven weapons— principally, insecticide-treated bed nets, other antimosquito strategies, and new combination drugs featuring an ancient Chinese herb— are moving to the front lines.

最重要的是，已经证实有效的武器，正朝对抗疟疾的前线移动，这些武器主要是含有杀虫剂的蚊帐、他的抗蚊策略，以及根据古老中国药草而来的新组合药物。

The survey about employing insecticide in zone of releasing Aphidius gifuensis and convention field show that: Agricultural chemicals employment number of times reduce 1.22 and average employment amount reduced 40%.

对放蜂区和常规施药防治区内烟农施用杀虫剂情况的调查表明，在放蜂区施用杀虫剂的平均次数为1.83次，而常规施药防治区为3.05次，放蜂区的施药次数比常规防治区减少40%。

In the field of biology the paper dicusses mating,parasite,developing,oviposition,etc.of Aphidius gifuensis and effect on its host,also ecologically dicusses its natural enemies and effect of weather,growth of tobacco,insecticide on Aphidius gifuensis.

生物学方面主要论述了烟蚜茧蜂的交配、寄生、发育、产卵、体色、性比、越冬、成蜂寿命及其对寄主生命活动的影响：生态学方面主要论述了烟蚜茧蜂的天敌以及气候因子、烟草长势和化学农药对其的影响。

A salt or ester of carbamic acid, especially one used as an insecticide.

组成蛋白质的基本单位，含有一个氨基和一个羧酸基。

A salt or ester of carbamic acid, especially one used as an insecticide.

一种酸，因其形成的盐和酯而为人所知。

A salt or ester of carbamic acid, especially one used as an insecticide.

兴奋剂一种粉末状的兴奋剂，通常是氨基丙苯

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。